The oxidation behavior of iron aluminides at 1300{degrees}C

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The oxidation behavior of iron-aluminum alloys, in air and oxygen, at 1300{degrees}C has been studied with particular emphasis on the time to loss of protectiveness with onset of breakaway attack. The role of alloy aluminum content between 8.4 and 15.8 w/o and of the addition of a reactive element, zirconium, up to 0.2 w/o, were examined. The periods over which the oxide scales remained protective were quantitatively correlated with aluminum depletion in the alloy substrate. Times to the onset of breakaway for Fe{sub 3}Al-Zr have been compared with those for commercial ODS FeCrAl alloys containing Y{sub 2}O{sub 3} (MA 956, ... continued below

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21 p.

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Bennett, M.J.; DeVan, J.H. & Tortorelli, P.F. November 1, 1996.

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Description

The oxidation behavior of iron-aluminum alloys, in air and oxygen, at 1300{degrees}C has been studied with particular emphasis on the time to loss of protectiveness with onset of breakaway attack. The role of alloy aluminum content between 8.4 and 15.8 w/o and of the addition of a reactive element, zirconium, up to 0.2 w/o, were examined. The periods over which the oxide scales remained protective were quantitatively correlated with aluminum depletion in the alloy substrate. Times to the onset of breakaway for Fe{sub 3}Al-Zr have been compared with those for commercial ODS FeCrAl alloys containing Y{sub 2}O{sub 3} (MA 956, PM 2000, ODM 751). Characterization of the oxidation of the Fe3Al-Zr alloys was undertaken using a range of surface analytical procedures, including x-ray diffraction, optical microscopy, scanning and scanning transmission electron microscopy with associated energy dispersive x-ray spectroscopy, and electron microprobe analysis.

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21 p.

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OSTI as DE97000023

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  • 3. international conference on microscopy of oxidation, Cambridge (United Kingdom), 16-18 Sep 1996

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  • Other: DE97000023
  • Report No.: CONF-960928--1
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 390636
  • Archival Resource Key: ark:/67531/metadc686479

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  • November 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Jan. 22, 2016, 1:02 p.m.

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Bennett, M.J.; DeVan, J.H. & Tortorelli, P.F. The oxidation behavior of iron aluminides at 1300{degrees}C, article, November 1, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc686479/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.